/*
 *
 *  * Copyright 2015-2101 Shouqi Limousine & chauffeur Group.
 *  *
 *  * Licensed under the Apache License, Version 2.0 (the "License");
 *  * you may not use this file except in compliance with the License.
 *  * You may obtain a copy of the License at
 *  *
 *  *      http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  * Unless required by applicable law or agreed to in writing, software
 *  * distributed under the License is distributed on an "AS IS" BASIS,
 *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  * See the License for the specific language governing permissions and
 *  * limitations under the License.
 *
 */

package com.sq.plugin.redis.serializer.impl.jackson;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.sq.plugin.redis.serializer.Serializer;
import com.sq.plugin.redis.serializer.exception.SerializationException;
import com.sq.plugin.redis.serializer.util.SerializationUtils;

/**
 * @author cooper
 */
public class Jackson2JsonSerializer implements Serializer<Object> {

    private ObjectMapper objectMapper = new ObjectMapper();

    public Jackson2JsonSerializer() {
    }

    @Override
    public byte[] serialize(Object t) throws SerializationException {
        if (t == null) {
            return SerializationUtils.EMPTY_ARRAY;
        }

        try {
            return this.objectMapper.writeValueAsBytes(t);
        } catch (Exception e) {
            throw new SerializationException("Could not write JSON: " + e.getMessage(), e);
        }
    }

    @Override
    public <T> T deserialize(byte[] bytes, Class<T> clz) throws SerializationException {
        if (SerializationUtils.isEmpty(bytes)) {
            return null;
        }

        try {
            return this.objectMapper.readValue(bytes, 0, bytes.length, clz);
        } catch (Exception e) {
            throw new SerializationException("Could not read JSON: " + e.getMessage(), e);
        }
    }

    public <T> T deserialize(byte[] bytes, TypeReference<T> tr) throws SerializationException {
        if (SerializationUtils.isEmpty(bytes)) {
            return null;
        }

        try {
            return this.objectMapper.readValue(bytes, tr);
        } catch (Exception e) {
            throw new SerializationException("Could not read JSON: " + e.getMessage(), e);
        }
    }
}
